CN106028894B

CN106028894B - Dish washing machine

Info

Publication number: CN106028894B
Application number: CN201480076198.XA
Authority: CN
Inventors: 柳守馨; 洪承基; 朴赞荣
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2013-12-31
Filing date: 2014-12-30
Publication date: 2020-06-23
Anticipated expiration: 2034-12-30
Also published as: CN106028894A; EP3089643A4; JP2017500972A; EP3089643B1; AU2014374589B2; KR20150079382A; AU2014374589A1; KR102306964B1; JP6821432B2; EP3089643A1

Abstract

A dishwasher includes: a plurality of spray nozzles for spraying washing water; a water storage tank for storing washing water; a pump for pumping the washing water stored in the sump; and a dispensing means for dispensing the washing water pumped by the pump into the plurality of spray nozzles. The dispensing device comprises: a cylindrical housing having an inlet formed in one axial end thereof and a plurality of outlets arranged in a circumferential surface of the cylindrical housing in an axial direction and connected to the plurality of spray nozzles; an opening/closing member rotatably provided in the cylindrical housing to open and close the plurality of outlets; and a motor for rotating the opening/closing member. The washing water can be independently sprayed from a plurality of nozzles, and the washing tub can be dividedly washed, and the pressure loss of the washing water can be reduced, thereby increasing the washing capacity.

Description

Dish washing machine

Technical Field

Embodiments of the present disclosure relate to a dishwasher having a spray nozzle fixed to one side of a washing tub and a vane disposed to be movable in the washing tub and configured to reflect washing water sprayed from the spray nozzle toward dishes.

Background

A dishwasher, which is a home appliance for washing dishes by spraying high pressure water to the dishes, comprising: a body having a wash tub provided in a dishwasher; a bowl basket for accommodating tableware; a water storage tank for storing washing water; a spray nozzle spraying washing water; and a pump supplying the washing water from the water storage tank to the spray nozzle.

Generally, a dishwasher employs a rotor type spray structure having a rotating spray nozzle. The rotary nozzle sprays washing water while rotating by water pressure. Such a rotary nozzle sprays washing water within a radius of rotation, and thus there is an area where the sprayed washing water does not reach. Therefore, a line type spray structure is proposed so that each area is reached by the sprayed washing water.

The line type spray structure includes a fixed nozzle fixed to one side of the washing tub, and a vane moving within the washing tub to reflect the washing water sprayed from the fixed spray nozzle toward the dishes. Thus, it can reflect the washing water to the entire area of the washing tub according to the movement of the reflection plate.

The fixed nozzle may have a plurality of spray holes arranged in a lateral direction of the wash basin. The stationary nozzle may be fixed to a rear wall of the washing tub, extend in a lateral direction of the washing tub to reflect the washing water sprayed from the plurality of spray holes of the vane, and be arranged to linearly reciprocate in a front-rear direction of the washing tub.

The line type injection structure is further provided with a driving unit for driving the blades. The driving unit may be implemented in various forms. For example, the driving unit may include a motor, a belt connected to the motor to transmit a driving force to the blades, and a guide rail to guide movement of the blades. When the motor is driven, the belt may rotate causing the vanes to move on the guide rails.

Disclosure of Invention

Technical problem

As for the distribution means for distributing the washing water stored in the water storage tank to the spray nozzles, the line type spray structure may employ a distribution means having a different structure from that of the rotor type spray structure.

When the rotary nozzle is used as a spray nozzle provided at a lower portion of the washing tub, arranging the outlet of the distribution means to face upward may shorten the length of a flow passage connecting the outlet of the distribution means to the rotary nozzle and minimize a pressure loss of the washing water.

On the other hand, when the fixed nozzle is used as a spray nozzle provided at the lower portion of the washing tub, the fixed nozzle is provided close to the rear wall of the washing tub, and therefore, the outlet of the dispensing means need not be arranged facing upward. Arranging the outlet to face upward increases the pressure loss of the washing water since the flow path connecting the outlet of the distribution means to the fixed nozzle should be bent backward around the outlet of the distribution means.

In addition, since the spray nozzles of the line type spray structure are fixed, the target washing of spraying the washing water onto only one portion of the washing tub may be performed by dispensing the washing water to only some of the spray nozzles.

Solution to the problem

According to an aspect of the present disclosure, a dishwasher may include: a main body; a plurality of spray nozzles configured to spray washing water; a water storage tank configured to store washing water; a pump configured to pump the washing water stored in the sump; and a dispensing device configured to dispense the washing water pumped by the pump into the plurality of spray nozzles. The dispensing device may comprise: a cylindrical housing having an inlet formed in one axial end portion and a plurality of outlets arranged in a circumferential surface of the cylindrical housing in an axial direction and connected to the plurality of spray nozzles; an opening/closing member rotatably provided or placed in the cylindrical housing to open and close the plurality of outlets; and a motor configured to rotate the opening/closing member.

The plurality of outlets may be independently opened and closed according to the rotation of the opening/closing member.

The opening/closing member may include a rotating body having a cylindrical shape and a plurality of sealing members combined with the rotating body to close the plurality of outlets.

The sealing member may be combined with the rotating body to be movable in a radial direction of the rotating body.

The sealing member is movable between an open position in which the sealing member abuts the rotatable body and a closed position in which the sealing member abuts the outlet.

The sealing member may be moved from the open position to the closed position by the pressure of the washing water.

The sealing member may include a sealing unit having a curved shape and a coupling protrusion protruding from the sealing unit to be combined with the rotating body.

The rotating body may include a fastening hole into which the coupling protrusion is inserted.

The coupling protrusion may include a stopper unit protruding to prevent the sealing member from being separated from the rotating body.

The outer circumferential surface of the rotating body may be spaced apart from the inner circumferential surface of the housing by a predetermined distance.

The rotating body may include a spacing protrusion protruding in a radial direction to maintain a distance between an outer circumferential surface of the rotating body and an inner circumferential surface of the housing.

The rotating body may include a plurality of flow holes formed in a circumferential surface of the rotating body to correspond to the plurality of outlets.

The dispensing device may further include a cam member coupled with the opening/closing member and the motor to rotate together with the opening/closing member, and a micro switch contacted by the cam member to detect a rotational position of the opening/closing member.

The cam member may include a convex unit and a concave unit alternately formed in a circumferential direction such that the micro switch is turned on and off according to rotation of the cam member.

The dispensing device may further include a controller that designates a position of the opening/closing member according to a point of time at which the micro switch is turned on and off, and rotates or stops the motor such that the opening/closing member is rotated to a desired rotational position among the rotational positions.

The plurality of spray nozzles may include at least one fixed nozzle fixed at one side of the washing tub and at least one rotating nozzle configured to rotate due to water pressure.

The at least one stationary nozzle may be disposed adjacent to a rear wall of the washing tub, the inlet may be disposed or placed to face one side wall of the body, and the plurality of outlets may be disposed or placed to face the rear wall of the body.

According to an aspect of the present disclosure, a dishwasher may include: a main body; a washing tank disposed or placed in the main body; a basket disposed or placed in the washing tub to store the dishes; a plurality of fixed nozzles fixed at one side of the washing tub to spray washing water; a blade configured to move within the washing tub and reflect the washing water from the plurality of stationary nozzles toward the dishes; and a distribution means configured to selectively distribute the washing water to all or some of the plurality of fixed nozzles such that the washing water is selectively sprayed to the entire area or a partial area of the washing tub.

The plurality of fixed nozzles may include a left fixed nozzle disposed or placed at a left side of the washing tub and a right fixed nozzle disposed or placed at a right side of the washing tub. The washing tub may be divided into left and right regions, and the left and right regions of the washing tub may be independently washed.

The plurality of stationary nozzles may be disposed adjacent to a rear wall of the body.

The dispensing device may comprise: a cylindrical housing having an inlet formed at one axial end thereof and a plurality of outlets arranged in a circumferential surface in an axial direction and connected to the plurality of stationary nozzles; an opening/closing member rotatably provided or placed in the housing to open and close the plurality of outlets; and a motor configured to rotate the opening/closing member.

The inlet may be disposed or placed to face one side wall of the body, and the plurality of outlets may be disposed or placed to face a rear wall of the body.

The opening/closing member may include a rotating body having a cylindrical shape and including a plurality of flow holes corresponding to the plurality of outlets, and a plurality of sealing members combined with the rotating body to close the plurality of outlets.

The dispensing device may further include a cam member coupled with the opening/closing member and rotating together with the opening/closing member, and a micro switch contacted by the cam member to detect a rotational position of the opening/closing member.

According to an aspect of the present disclosure, a dispenser piece may include: a cylindrical housing including an inlet formed in one axial end portion and a plurality of outlets arranged in a circumferential surface in an axial direction; a cylindrical rotating body rotatably disposed or placed in the housing and having a plurality of flow holes corresponding to the plurality of outlets; a plurality of sealing members combined with the rotating body to close the plurality of outlets; a motor configured to rotate the rotating body; a cam member coupled with the rotating body to rotate together with the rotating body; and a micro switch contacted by the cam member to detect a rotational position of the rotating body.

The sealing member may be coupled to the rotating body to be movable in a radial direction between an open position in which the sealing member abuts the rotating body and a closed position in which the sealing member abuts the outlet. The sealing member may be movable from an open position to a closed position due to water pressure.

According to an aspect of the present disclosure, a dishwasher may include: a main body; a plurality of spray nozzles configured to spray washing water; a water storage tank configured to store washing water; a pump configured to pump the washing water stored in the sump; and a dispensing device configured to dispense the washing water pumped by the pump into the plurality of spray nozzles. The dispensing device may comprise: a housing formed in a cylindrical shape having a top surface, a bottom surface, and a circumferential surface, the housing having a plurality of outlets connected to the plurality of spray nozzles, wherein the plurality of outlets includes at least one axial outlet formed in at least one of the top surface and the bottom surface of the housing and at least one radial outlet formed in the circumferential surface of the housing; an opening/closing member provided or placed within the housing so as to be rotatable about an axial direction of the housing, the opening/closing member having an axial opening/closing unit configured to open and close the at least one axial outlet and a radial opening/closing unit configured to open and close the at least one radial outlet; and a motor configured to generate a rotational force to rotate the opening/closing member.

The axial opening/closing unit may be integrated with the radial opening/closing unit.

The axial opening/closing unit and the radial opening/closing unit may be disposed perpendicular to each other.

The axial opening/closing unit may include an axial communication hole that is provided or placed to correspond to the axial outlet port and opens the axial outlet port.

The radial opening/closing unit may include a radial communication hole that is provided or placed to correspond to the radial outlet port and opens the radial outlet port.

The opening/closing member may have a cylindrical shape.

According to an aspect of the present disclosure, a dishwasher may include: a main body; a plurality of spray nozzles configured to spray washing water; a water storage tank configured to store washing water; a pump configured to pump the washing water stored in the sump; and a distribution system configured to distribute the washing water pumped by the pump into the plurality of spray nozzles. The dispensing system may include: a distribution flow path configured to connect the pump and the plurality of spray nozzles and having a plurality of branch points; and a plurality of dispensing means disposed or placed at the plurality of branch points to dispense the washing water.

At least one of the plurality of dispensing devices may comprise: a cylindrical housing having an inlet and a plurality of outlets; an opening/closing member provided or placed within the housing so as to be rotatable about an axial direction of the housing, the opening/closing member being configured to open and close at least some of the plurality of outlets; and a motor configured to generate a rotational force to rotate the opening/closing member.

The plurality of outlets may be formed in a circumferential surface of the cylindrical housing.

The plurality of outlets may be arranged in an axial direction of the housing.

The plurality of outlets may be formed in at least one of a top surface and a bottom surface of the cylindrical housing.

The plurality of outlets may be arranged in a radial direction of the housing.

The plurality of outlets may include at least one radial outlet formed in a circumferential surface of the cylindrical housing and at least one axial outlet formed in at least one of a top surface and a bottom surface of the cylindrical housing.

The opening/closing member may include an axial opening/closing unit configured to open and close the at least one axial outlet, and a radial opening/closing unit configured to open and close the at least one radial outlet and disposed perpendicular to the axial opening/closing unit.

According to one disclosed aspect, a dispensing device for a dishwasher may include: a housing comprising a plurality of outlets arranged on a surface of the housing and an inlet connectable to a pump of a dishwasher; an opening/closing member rotatably provided in the housing, formed with a plurality of flow holes corresponding to the plurality of outlets to selectively open and close the plurality of outlets; and a motor rotating the opening/closing member, wherein an axial direction of the at least one outlet is substantially perpendicular to an axial direction of the inlet.

The housing may be cylindrical, the inlet may be formed in one axial end portion thereof, and the plurality of outlets may be arranged in the circumferential surface of the cylindrical housing in the axial direction. The opening/closing member may include a rotating body having a cylindrical shape and a plurality of sealing members combined with the rotating body to close the plurality of outlets.

The dispensing device may further include a cam member coupled with the rotating body to rotate together with the rotating body, and a micro switch contacted by the cam member to detect a rotational position of the rotating body.

The dispensing means may further comprise one or more dispensing valves corresponding to one or more of the plurality of outlets to open and close the outflow channel of the one or more of the plurality of outlets.

The housing may be cylindrical and have a top surface, a bottom surface and a circumferential surface, the inlet may be formed in the circumferential surface of the housing, and the at least one outlet may be formed in at least one of the top surface and the bottom surface of the housing. Further, the at least one outlet may be formed in a circumferential surface of the housing. The plurality of outlets may be formed in at least one of the top surface and the bottom surface of the housing, and the number of the flow holes may be greater than the number of outlets formed in the at least one of the top surface and the bottom surface of the housing.

The plurality of outlets may be formed in the circumferential surface of the housing, and the number of the flow holes may be greater than the number of the outlets formed in the circumferential surface of the housing.

The opening/closing member may include an axial opening/closing unit for opening and closing at least one outlet formed in at least one of the top and bottom surfaces of the housing, and a radial opening/closing unit for opening and closing at least one outlet formed in the circumferential surface of the housing.

The invention has the advantages of

According to an aspect of the present disclosure, a dispensing device configured to dispense washing water in a dishwasher having a linear spray structure may minimize pressure loss of washing water and increase space availability.

Drawings

These and/or other aspects of the present disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of a dishwasher according to an embodiment of the present disclosure;

FIG. 2 is a view showing a lower portion of the dishwasher of FIG. 1;

FIG. 3 is a view of a flow passage structure of the dishwasher of FIG. 1;

FIG. 4 is an exploded view of a stationary nozzle assembly of the dishwasher of FIG. 1;

FIG. 5 is a cross-sectional view of a stationary nozzle assembly of the dishwasher of FIG. 1;

FIG. 6 is a view of a dispensing device of the dishwasher of FIG. 1;

FIG. 7 is an exploded view of the dispensing device of the dishwasher of FIG. 1;

FIG. 8 is an exploded view of an opening/closing member of the dispensing device of the dishwasher of FIG. 1;

FIG. 9 is a cross-sectional view of a dispensing device of the dishwasher of FIG. 1;

fig. 10 is an enlarged view of a portion a of fig. 9;

FIG. 11 is a side view of the dispensing device of the dishwasher of FIG. 1 with the motor omitted;

FIG. 12 is an enlarged view of a cam member of the dispensing device of the dishwasher of FIG. 1;

fig. 13 is a view showing a relationship between an on/off time point of a micro switch and a rotational position of an opening/closing member of a dispensing device of the dishwasher of fig. 1;

fig. 14 is a view illustrating the operation of the dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into the rotary nozzle by opening only the second outlet;

fig. 15 is a view illustrating an operation of a dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into a right stationary nozzle by opening only a third outlet;

fig. 16 is a view illustrating an operation of a dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into left and right fixed nozzles by opening only first and third outlets;

fig. 17 is a view illustrating an operation of a dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into a left stationary nozzle by opening only a first outlet;

FIG. 18 is an exploded view of the floor, floor cover and motor of the wash tank of the dishwasher of FIG. 1;

FIG. 19 is a cross-sectional view of the floor, floor cover and motor of the dishwasher of FIG. 1;

FIG. 20 is an exploded view of the vanes, rail assembly, spray nozzle assembly and floor cover of the dishwasher of FIG. 1;

FIG. 21 is a view of the vanes and drive arrangement of the dishwasher of FIG. 1, which is an exploded view of the drive arrangement;

FIG. 22 is a view of a belt and belt support of the dishwasher of FIG. 1;

FIG. 23 is a cross-sectional view of a rail, belt mount and blade mount of the dishwasher of FIG. 1;

FIG. 24 is a view of the guide rails, belt, drive pulley and rear bracket of the dishwasher of FIG. 1;

FIG. 25 is a cross-sectional view of the guide rail, belt, drive pulley and rear bracket of the dishwasher of FIG. 1;

FIG. 26 is a view of the tracks, belt, idler wheels and front rack of the dishwasher of FIG. 1;

FIG. 27 is a cross-sectional view of the track, belt, idler wheel and front rack of the dishwasher of FIG. 1;

FIG. 28 is a view of a blade and blade holder of the dishwasher of FIG. 1;

FIG. 29 is a perspective view of a blade of the dishwasher of FIG. 1;

FIG. 30 is an exploded view of a portion of a blade and blade holder of the dishwasher of FIG. 1;

fig. 31 to 33 are views illustrating a rotating operation of a blade of the dishwasher of fig. 1;

FIG. 34 is a view illustrating an operation of reflecting washing water by a vane in a vane moving part of the dishwasher of FIG. 1;

FIG. 35 is a view illustrating an operation of reflecting washing water by a vane in a vane non-moving section of the dishwasher of FIG. 1;

FIG. 36 is a view of a sump, a coarse filter and a fine filter of the dishwasher of FIG. 1;

FIG. 37 is an exploded view of the sump, coarse filter, fine filter and microfilter of the dishwasher of FIG. 1;

FIG. 38 is a sectional view taken along line I-I of FIG. 36;

FIG. 39 is an exploded view of portion B of FIG. 38;

FIG. 40 is a sectional view taken along line II-II of FIG. 38;

FIG. 41 is an exploded view of portion C of FIG. 40;

FIG. 42 is a plan view of the sump and coarse filter of the dishwasher of FIG. 1, illustrating a locking operation of the coarse filter;

FIG. 43 is a side view of a coarse filter of the dishwasher of FIG. 1;

FIG. 44 is a view of the sump and coarse filter of the dishwasher of FIG. 1 illustrating a locking operation of the coarse filter;

FIG. 45 is a cross-sectional view of a sump, a coarse filter and a micro-filter of the dishwasher of FIG. 1;

FIG. 46 is an exploded plan view of a portion of a coarse filter and a fine filter of the dishwasher of FIG. 1;

FIG. 47 is a plan view of a lower portion of the wash tank of the dishwasher of FIG. 1;

FIG. 48 is a perspective view of a dispensing device according to an embodiment of the present disclosure;

FIG. 49 is a plan view illustrating the operation of the dispensing device of FIG. 48;

FIG. 50 is a perspective view of a dispensing device according to an embodiment of the present disclosure;

FIG. 51 is a plan view illustrating the operation of the dispensing device of FIG. 50;

FIG. 52 is a side view illustrating the operation of the dispensing device of FIG. 50;

FIG. 53 is a perspective view of a dispensing device according to an embodiment of the present disclosure;

FIG. 54 is a conceptual diagram of a dispensing device according to an embodiment of the present disclosure;

FIG. 55 is a conceptual diagram of a dispensing device according to an embodiment of the present disclosure; and

fig. 56 is a conceptual diagram of a wash water distribution system according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the present disclosure, wherein like reference numerals refer to like elements throughout.

Fig. 1 is a schematic sectional view of a dishwasher according to an embodiment of the present disclosure. Fig. 2 is a view showing a lower portion of the dishwasher of fig. 1.

An overall structure of a dishwasher according to an embodiment of the present disclosure will be generally described with reference to fig. 1 and 2.

The dishwasher 1 may include: a main body 10 forming an external appearance; a washing tub 30 disposed or placed in the main body 10;

bowl baskets

12a and 12b provided or placed in the washing tub 30 to receive dishes;

spray nozzles

311, 313, 330, and 340 configured to spray washing water; a water storage tank 100 configured to store washing water; a circulation pump 51 configured to pump the washing water of the sump 100 and supply the washing water to the

spray nozzles

311, 313, 330, and 340; a drain pump 52 configured to drain the washing water of the sump 100 together with the residue (e.g., food, filth, etc.), wherein the washing water and the residue of the sump 100 may flow into the drain pump 52 from the main body 10; a vane 400 configured to move within the washing tub 30 and reflect washing water toward the dishes; and a driving device 420 configured to drive the blade 400.

The washing tub 30 may have a substantially box shape with a front opening to put in or take out dishes. The front opening of the washing tub 30 can be opened and closed by the door 11. The wash tank 30 may have an upper wall 31, a rear wall 32, a left wall 33, a right wall 34, and a floor 35.

The

bowl baskets

12a and 12b may be wire racks including wires, which may prevent the wash water from being collected and allow the wash water to pass therethrough. The

bowl baskets

12a and 12b may be provided or positioned to be attachable to or detachable from the interior of the wash tank 30. The

bowl baskets

12a and 12b may include an upper bowl basket 12a disposed in an upper portion of the wash tank 30 and a lower bowl basket 12b disposed in a lower portion of the wash tank 30.

The spray nozzles 311, 313, 330, and 340 may spray wash water and wash dishes at high pressure. The spray nozzles 311, 313, 330, and 340 may include an upper rotary nozzle 311 disposed or placed in an upper portion of the wash tank 30, a middle rotary nozzle 313 disposed or placed in a middle portion of the wash tank 30, and fixed

nozzles

330 and 340 disposed or placed in a lower portion of the wash tank 30.

The upper spin nozzle 311 may be disposed or placed above the upper bowl basket 12a and spray wash water downward while being spun by water pressure. For this, the injection hole 312 may be provided or placed in the lower end of the upper rotary nozzle 311. The upper rotary nozzle 311 may directly spray the washing water toward the dishes received in the upper basket 12 a.

The middle rotating nozzle 313 may be disposed or placed between the upper and

lower baskets

12a and 12b and spray wash water upward and downward while rotating due to water pressure. For this, the injection holes 314 may be provided or placed at the upper and lower ends of the middle rotary nozzle 313. The middle rotary nozzle 313 may directly spray the washing water toward the dishes received in the upper and

lower baskets

12a and 12 b.

Unlike the

rotating nozzles

311 and 313, the

stationary nozzles

330 and 340 may be provided or placed without movement (i.e., are stationary) and fixed to one side of the washing tub 30. For example, the fixed

nozzles

330 and 340 may be disposed substantially adjacent to the rear wall 32 of the wash tank 30 and spray wash water toward the front of the wash tank 30. Accordingly, the washing water sprayed through the

stationary nozzles

330 and 340 may not be directly sprayed toward the dishes, but the washing water sprayed through the

stationary nozzles

330 and 340 may be redirected by the vanes 400, as explained below.

The washing water sprayed through the

stationary nozzles

330 and 340 may be reflected toward the dishes by the vanes 400. The

stationary nozzles

330 and 340 may be disposed under the lower bowl basket 12b, and the vanes 400 may reflect the washing water sprayed by the

stationary nozzles

330 and 340 upward. That is, the washing water sprayed through the fixed

nozzles

330 and 340 may be reflected by the vanes 400 toward the dishes received in the lower basket 12 b.

The fixed

nozzles

330 and 340 may have a plurality of injection holes 331 and 341, respectively, arranged in a lateral direction of the wash tank 30. The plurality of injection holes 331 and 341 may inject the washing water forward. As shown in fig. 2, there are three injection holes 331 and three injection holes 341. However, the present disclosure is not so limited, and there may be less or more than three injection holes for each fixed nozzle. The spray holes may be evenly or regularly distributed, and/or may be the same size, or the spray holes may be irregularly distributed, and/or may be different sizes.

The vane 400 may be elongated in a lateral direction of the wash tank 30 to completely reflect the washing water sprayed from the plurality of

spray holes

331 and 341 of the fixed

nozzles

330 and 340. That is, one longitudinal end of the vane 400 may be adjacent to the left wall 33 of the wash tank 30, and the other longitudinal end of the vane 400 may be adjacent to the right wall 34 of the wash tank 30.

The vane 400 may linearly reciprocate (e.g., move in a front-rear direction) in a direction in which the washing water is sprayed from the fixed

nozzles

330 and 340. That is, the vane 400 may linearly reciprocate in the forward and backward directions of the wash tank 30.

Accordingly, the linear spray structure including the fixed

nozzles

330 and 340 and the vanes 400 can wash the entire area of the wash tank 30 without a dead zone. The

stationary nozzles

330 and 340 are different from the rotating nozzles that can spray the washing water only within the range of the radius of rotation.

The fixed

nozzles

330 and 340 may include a left fixed nozzle 330 disposed at the left side of the wash tank 30 and a right fixed nozzle 340 disposed at the right side of the wash tank 30. However, the present disclosure is not so limited and there may be more than two fixed nozzles provided in the dishwasher. Furthermore, there may be more than two fixed nozzles arranged adjacent to each other.

As described below, the

rotary nozzles

311 and 313 and the fixed

nozzles

330 and 340 may spray the washing water independently of each other. In addition, the left and right

fixed nozzles

330 and 340 may also spray the washing water independently of each other.

The washing water sprayed from the left fixed nozzle 330 may be reflected only to the left area of the washing tub 30 by the vane 400, and the washing water sprayed from the right fixed nozzle 340 may be reflected only to the right area of the washing tub 30 by the vane 400.

Accordingly, the dishwasher 1 may divide the washing tub 30 into left and right regions and wash the left and right regions of the washing tub 30 independently. Naturally, as will be understood by those of ordinary skill in the art, the wash tank 30 may not necessarily be divided into left and right zones, but may be further subdivided and washed, if desired. For example, there may be more than two fixed nozzles disposed adjacent to each other, and the number of areas to be washed may correspond to the number of fixed nozzles (for example, in the case of three fixed nozzles, there may be a left area, a center area, and a right area). Alternatively, it is possible that some of the washing water sprayed from the fixed nozzles of the dishwasher 1 may be reflected by the vanes to an area that is washed mainly by the washing water sprayed from another nozzle and reflected by the vanes.

The components of the dishwasher 1 according to the embodiment of the present disclosure will be described in further detail.

Fig. 3 is a view of a flow passage structure of the dishwasher of fig. 1. Fig. 4 is an exploded view of a stationary nozzle assembly of the dishwasher of fig. 1. FIG. 5 is a cross-sectional view of a stationary nozzle assembly of the dishwasher of FIG. 1.

The operation of the dishwasher, the flow passage structure, the fixed nozzle assembly and the washing water distribution structure according to the embodiment of the present disclosure will be described with reference to fig. 3 to 5.

The dishwasher may perform one or more of a water supply operation, a washing operation, a draining operation, and a drying operation.

In the water supply operation, the washing water may be supplied into the washing tub 30 through a water supply pipe (not shown). The washing water supplied to the washing tub 30 may flow into the water storage tub 100 provided or placed under the washing tub 30 due to the inclination of the bottom plate 35 of the washing tub 30, and be stored in the water storage tub 100.

In the washing operation, the circulation pump 51 may be operated to pump the washing water of the sump 100. The washing water pumped by the circulation pump 51 may be distributed to the

rotary nozzles

311 and 313, the left fixed nozzle 330, and the right fixed nozzle 340 by the distribution means 200. Due to the pumping force of the circulation pump 51, the washing water may be sprayed from the

spray nozzles

311, 313, 330, and 340 at high pressure to wash the dishes.

Here, the upper spin nozzle 311 and the middle spin nozzle 313 may receive the washing water from the dispenser 200 through the second hose 271 b. The left fixed nozzle 330 may receive the washing water from the dispensing device 200 through the first hose 271 a. The right fixed nozzle 340 may receive the washing water from the dispenser 200 through the third hose 271 c.

According to an aspect of the present disclosure, the dispensing device 200 may be configured or positioned to have four dispensing modes.

In the first mode, the dispensing device 200 supplies only the washing water to the

rotary nozzles

311 and 313 through the second hose 271 b.

In the second mode, the dispensing device 200 supplies only the washing water to the right stationary nozzle 340 through the third hose 271 c.

In the third mode, the dispensing device 200 supplies only the washing water to the left and right

fixed nozzles

330 and 340 through the first and

third hoses

271a and 271 c.

In the fourth mode, the dispensing device 200 supplies only the washing water to the left stationary nozzle 330 through the first hose 271 a.

However, the dispensing device 200 may have more than four dispensing patterns, or may have less than four dispensing patterns.

The washing water sprayed from the

spray nozzles

311, 313, 330, and 340 may remove food, dirt, or other types of debris attached to the dishes while hitting (spraying) the dishes, fall down together with the food, dirt, or other types of debris, and be stored again in the water storage tank 100. The circulation pump 51 may pump and circulate the washing water stored in the sump 100 again. The circulation pump 51 may be repeatedly driven and stopped several times during the washing operation. In this process, dirt, food or other types of debris, which have fallen into the sump 100 together with the washing water, may be captured by the filter installed in the sump 100 and remain in the sump 100 so that it is not circulated into the

spray nozzles

311, 313, 330 and 340.

In the draining operation, the drain pump 52 may be operated to drain the residue (e.g., food, filth, etc.) and the washing water remaining in the sump 100 and the washing water out of the main body 10.

In the drying operation, a heater (not shown) installed in the washing tub 30 may be operated to dry the dishes.

The structures of the left and right

fixed nozzles

330 and 340 will be described in detail.

The left stationary nozzle 330 may include: one or more injection holes 331 configured to inject washing water; a nozzle flow passage 332 configured to supply washing water to the spray hole 331; a nozzle inflow port 333 into which the washing water flows through the nozzle flow passage 332; a nozzle body 334 forming an external appearance; a nozzle cap 335 combined with a rear portion of the nozzle body 334 to form a nozzle flow passage 332; a decoration member 336 combined with the front of the nozzle body 334; and a coupling hole 337 formed in the nozzle body 334 to combine the left fixed nozzle 330 with a floor cover (refer to 600 in fig. 19) which will be described later.

The right fixed nozzle 340 may include: one or more injection holes 341 configured to inject washing water; a nozzle flow passage 342 configured to supply washing water to the spray holes 341; a nozzle inflow port 343 into which the washing water flows through the nozzle flow passage 342; a nozzle body 344 forming an external appearance; a nozzle cover 345 combined with the rear of the nozzle body 344 to form a nozzle flow path 342; a decoration member 346 coupled with a front portion of the nozzle body 344; and a coupling hole 347 formed in the nozzle body 344 to combine the right fixed nozzle 340 with a floor cover 600, which will be described later. As can be seen from fig. 5, the coupling hole 337 of the left fixed nozzle 330 may be disposed adjacent to the coupling hole 347 of the right fixed nozzle 340.

Here, the nozzle body 334 of the left fixed nozzle 330 may be integrated with the nozzle body 344 of the right fixed nozzle 340. Therefore, the left fixed nozzle 330 and the right fixed nozzle 340 may be integrated.

By integrating the left fixed nozzle 330 with the right fixed nozzle 340, the left fixed nozzle 330 and the right fixed nozzle 340 can be easily aligned in a horizontal direction and easily combined with the floor cover 600.

The fixed nozzle assembly 320 may include a left fixed nozzle 330 and a right fixed nozzle 340. The nozzle assembly 300 may include a stationary nozzle assembly 320, an upper rotary nozzle 311, and an intermediate rotary nozzle 313.

Fig. 6 is a view of a dispensing device of the dishwasher of fig. 1. Fig. 7 is an exploded view of a dispensing device of the dishwasher of fig. 1. Fig. 8 is an exploded view of an opening/closing member of a dispensing device of the dishwasher of fig. 1. Fig. 9 is a cross-sectional view of a dispensing device of the dishwasher of fig. 1. Fig. 10 is an exploded view of portion a of fig. 9.

A dispensing device 200 of a dishwasher according to an embodiment of the present disclosure will be described with reference to fig. 6 to 10.

The dispensing device 200 may be formed, manufactured or configured to have a generally cylindrical shape.

The dispensing device 200 may include: a housing 210 having a substantially hollow cylindrical shape and forming an external appearance; an opening/closing member 220 provided or placed in the housing 210 to be rotatable; a motor 230 configured to rotate the opening/closing member 220; a support member 260 configured to support the motor 230 and the housing 210; a cam member 240 combined with the motor 230 and the opening/closing member 220 to rotate together with the opening/closing member 220; and a micro switch 250 contacted by the cam member 240 to detect a rotational position of the opening/closing member 220.

The housing 210 may be provided to be elongated toward both sidewalls (refer to 33 and 34 in fig. 2) of the washing tub 30. Hereinafter, the longitudinal direction of the housing 210 will be referred to as an axial direction. An inlet 211 through which the washing water flows into the housing 210 is formed at one axial end of the housing 210. The motor 230 may be disposed at the other axial end of the housing 210.

Specifically, the inlet 211 may be disposed or placed such that it faces the right wall 34 of the wash tank 30. The circulation pump 51 may be connected to the inlet 211. Accordingly, when the circulation pump 51 operates, the washing water stored in the sump 100 may flow into the case 210 through the inlet 211.

A plurality of

outlets

212a, 212b, and 212c may be formed in the circumferential surface of the housing 210. The plurality of

outlets

212a, 212b, and 212c may be arranged at regular intervals in the axial direction. The plurality of

outlets

212a, 212b, and 212c may include a first outlet 212a, a second outlet 212b, and a third outlet 212 c. Alternatively, the plurality of outlets may be irregularly arranged. Additionally, or alternatively, the plurality of outlets may have the same or different diameters through which the washing water flows.

Here, the plurality of

outlets

212a, 212b, and 212c may be disposed or placed such that they face the rear wall (refer to 32 in fig. 2) of the wash tank 30. The reason why the plurality of

outlets

212a, 212b, and 212c may be disposed or placed to face the rear wall 32 of the wash tank 30 is that the housing 210 of the dispensing device 200 according to the embodiment of the present disclosure has a cylindrical shape and may be disposed to be elongated toward both

side walls

33 and 34 of the wash tank 30, and the opening/closing member 220 is configured to open and close the

outlets

212a, 212b, and 212c while rotating about the axial direction of the housing 210.

Furthermore, since the dispensing device generally used in a conventional dishwasher may include a hemispherical housing and an opening/closing device having a flat disc shape, which is provided or placed in an upper portion of the housing and is capable of rotating, the outlet may not be assisted but provided or placed in the upper portion of the housing. That is, in conventional dispensing devices, the outlet is placed in the upper portion of the housing to face the top of the dishwasher. Thus, the flow channel connected to the outlet is sharply bent back once the flow channel starts from the outlet.

As described above, since the

outlets

212a, 212b and 212c of the distribution means 200 according to the embodiment of the present disclosure are disposed or placed to face the rear wall 32 of the washing tub 30, it is possible to reduce a pressure loss of the washing water supplied from the distribution means 200 to the fixed

nozzles

330 and 340 disposed adjacent to the rear wall 32 of the washing tub 30.

The pressure loss of the washing water can be reduced because the flow path connecting the

outlets

212a, 212b and 212c and the fixed

nozzles

330 and 340 can be smoothly formed without a sharply bent portion.

In contrast, when the conventional distribution means in which the outlet is disposed or placed toward the upper portion of the distribution means is applied to the fixed

nozzles

330 and 340 according to the embodiment of the present disclosure, the flow channel connected to the outlet must be sharply bent backward as soon as the flow channel starts from the outlet, thereby causing a large pressure loss.

The first outlet 212a, the second outlet 212b, and the third outlet 212c may be sequentially arranged from the left side to the right side of the wash tank 30.

Specifically, the first outlet 212a may be disposed relatively close to the left fixed nozzle 330, the third outlet 212c may be disposed relatively close to the right fixed nozzle 340, and the second outlet 212b may be disposed between (e.g., midway between) the first outlet 212a and the third outlet 212 c.

The first outlet 212a may be connected to the left fixed nozzle 330 through a first hose (refer to 271a in fig. 3). The second outlet 212b may be connected to the

rotary nozzles

311 and 313 through a second hose (refer to 271b in fig. 3). The third outlet 212c may be connected to the right fixed nozzle 340 through a third hose (refer to 271c in fig. 3).

As described above, since each of the

outlets

212a, 212b, and 212c is connected to one or more of the

spray nozzles

311, 313, 330, and 340 relatively close to the corresponding outlet, the length of the

hoses

271a, 271b, and 271c may be reduced, the

hoses

271a, 271b, and 271c may be prevented from being entangled, and/or the pressure loss of the washing water may be reduced.

A water storage tank coupling unit 213 combined with the water storage tank 100 may be provided or placed in the housing 210, and a distribution means coupling unit (refer to 109 in fig. 3) combined with the water storage tank coupling unit 213 may be provided or placed on the water storage tank 100. According to an aspect of the present disclosure, the water storage tank coupling unit 213 may be disposed or placed in a tank shape, and the dispensing instrument coupling unit 109 may be disposed or placed in a protrusion shape. By coupling the water storage tank coupling unit 213 to the dispensing means coupling unit 109, the positions of the dispensing means 200 and the water storage tank 100 can be aligned.

The opening/closing member 220 selectively opens and closes the

outlets

212a, 212b, and 212c while rotating about the axial direction of the housing 210 within the housing 210. Accordingly, the opening/closing member 220 basically serves to distribute the washing water to the

spray nozzles

311, 313, 330 and 340.

The opening/closing member 220 may have a substantially or substantially hollow cylindrical shape. The opening/closing member 220 may include a rotating body 221 rotating within the case 210 and a sealing member 225 combined with the rotating body 221 to close the

outlets

212a, 212b, and 212 c.

The flow holes 222 may be formed in the circumferential surface of the rotating body 221. The flow holes may for example be circular in shape. However, the present disclosure is not so limited and the flow holes may be shaped differently (e.g., oval, square, triangular, etc.). When the flow holes 222 are located at positions corresponding to the

outlets

212a, 212b, and 212c, the flow holes 222 may allow the washing water to flow out to the

outlets

212a, 212b, and 212 c.

In addition, the spacing protrusions 224 may be formed on the circumferential surface of the rotating body 221. The spacing protrusion 224 may space the inner circumferential surface of the housing 210 from the outer circumferential surface of the rotating body 221 by a predetermined distance. Accordingly, the spacing protrusion 224 may minimize friction between the opening/closing member 220 and the housing 210 when the opening/closing member 220 is rotated within the housing 210, and allow effective rotation of the opening/closing member 220. The inner circumferential surface of the housing 210 may be always maintained to be spaced apart from the outer circumferential surface of the rotating body 221 by a predetermined distance by the spacing protrusion 224.

In addition, a catching hole (clasphole) 223 combined with the sealing member 225 may be formed in the circumferential surface of the rotating body 221. The fastening protrusion unit 227 of the sealing member 225 is coupled with the fastening hole 223. The fastening holes 223 may have different shapes to correspond to the shapes of the fastening protrusion units 227 of the sealing member 225, respectively.

As an example, the fastening hole 223 in the middle may have a substantially cross shape, and each fastening hole 223 in both sides may have a straight shape. Similarly, the fastening protrusion units 227 of the sealing member 225 in the middle may have a cross shape, and each fastening protrusion unit 227 on both sides may have a straight shape.

By preparing the fastening hole 223 and the fastening protrusion unit 227 in different shapes, when the sealing member 225 bonded in the middle has a different shape from the sealing member 225 bonded at both sides, the sealing member 225 in the middle can be easily distinguished from the sealing member 225 bonded at both sides. Alternatively, the sealing member 225 in the middle may have a fastening hole and a fastening protrusion unit in a straight shape, and the other sealing members may have a fastening hole and a fastening protrusion unit in a cross shape. Alternatively, different shapes may be used.

One of the two axial ends of the rotating body 221 corresponding to the inlet 211 of the housing 210 is opened. The camshaft coupling unit 229 combined with the camshaft 241 of the cam member 240 may be provided or placed at the other of the two axial ends of the rotating body 221.

The sealing member 225 may be combined with the circumferential surface of the rotating body 221 to close the

outlets

212a, 212b, and 212 c. The sealing member 225 may be combined with the fastening hole 223 of the rotating body 221. The sealing member 225 may be combined with the fastening hole 223 of the rotating body 221 to be movable to a certain extent in a radial direction. Accordingly, the sealing member 225 may be snug against the

outlets

212a, 212b, and 212c to seal the

outlets

212a, 212b, and 212c tight.

That is, the sealing member 225 moves between an open position in which the sealing member 225 abuts against the rotating body 221 and a closed position in which the sealing member 225 abuts against the

outlets

212a, 212b, and 212 c. When the washing water flows into the housing 210, the sealing member 225 may naturally move from the open position to the closed position due to the pressure of the washing water. Therefore, the airtightness of the

outlets

212a, 212b, and 212c can be improved to improve the reliability of the dispensing device 200.

Each sealing member 225 may include: a sealing unit (refer to 226 in fig. 8) having a curved shape to closely fit the

outlets

212a, 212b, and 212 c; and a fastening protrusion unit 227 protruding from the sealing unit 226 and inserted into the fastening hole 223 of the rotating body 221.

The fastening protrusion unit 227 and the fastening hole 223 may be provided or placed with a small gap so that the sealing member 225 can move in a radial direction. In addition, a stopper unit 228 having a larger diameter than the fastening hole 223 may be formed at an end of the fastening protrusion unit 227 to prevent the sealing member 225 from being completely separated from the fastening hole 223.

The sealing member 225 may be formed in an integral type using a resin material. The sealing member 225 may be easily assembled with the rotating body 221 by applying a strong force to the fastening protrusion unit 227 and inserting the fastening protrusion unit 227 into the fastening hole 223. After the sealing member 225 is assembled, the braking unit 228 is caught in the fastening hole 223 without being separated from the rotating body 221 unless an external force is applied (e.g., by a hand of a user (e.g., a repairman)).

FIG. 11 is a side view of the dispensing device of the dishwasher of FIG. 1 with the motor omitted. Figure 12 is an enlarged view of a cam member of the dispensing device of the dishwasher of figure 1. Fig. 13 is a view illustrating a relationship between an on/off time point of a micro switch and a rotational position of an opening/closing member of a dispensing device of the dishwasher of fig. 1. Fig. 14 is a view illustrating the operation of the dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into the rotary nozzle by opening only the second outlet. Fig. 15 is a view illustrating the operation of the dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into the right stationary nozzle by opening only the third outlet. Fig. 16 is a view illustrating an operation of a dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into left and right fixed nozzles by opening only first and third outlets. Fig. 17 is a view illustrating the operation of the dispensing device of the dishwasher of fig. 1, in which wash water is dispensed only into the left stationary nozzle by opening only the first outlet.

The operation of the dispensing device according to an embodiment of the present disclosure will be described with reference to fig. 11 to 17.

When the motor 230 operates, a driving force is transmitted to the cam member 240 through the motor shaft 231, and the cam member 240 rotates. The motor 230 may be a unidirectional motor that rotates in only one direction.

For simplicity, based on fig. 12, it is assumed that the cam member 240 rotates clockwise about the rotation center 242. When the cam member 240 rotates, a driving force is transmitted to the opening/closing member 220 through the cam shaft 241 so that the opening/closing member 220 can rotate together with the cam member 240. However, the present disclosure is not so limited, and the cam member 240 may rotate in a different direction (e.g., counterclockwise).

The contact terminal 251 of the micro switch 250 may be disposed or placed in contact with the cam member 240. The cam member 240 may include

convex units

243a, 243b, and 243c protruding in the radial direction and

concave units

244a, 244b, and 244c depressed in the radial direction to open and close the micro switch 250.

The

convex units

243a, 243b, and 243c may include a first convex unit 243a, a second convex unit 243b, and a third convex unit 243c sequentially arranged counterclockwise, and the

concave units

244a, 244b, and 244c may include a first concave unit 244a, a second concave unit 244b, and a third concave unit 244c sequentially arranged counterclockwise.

It is assumed that the micro switch 250 is turned on when the contact terminal 251 is contacted by the

protrusion units

243a, 243b, and 243c of the cam member 240, and is turned off when the contact terminal 251 is contacted by the

recess units

244a, 244b, and 244c of the cam member 240. Accordingly, when the motor 230 is driven, the micro switch 250 may be alternately turned on and off.

In addition, the dispensing device 200 may further include a controller that determines the rotational position of the opening/closing member 220 according to the time point at which the micro switch 250 is turned on and off, and rotates the motor 230 or stops the rotation of the motor 230 such that the opening/closing member 220 is rotated to a desired specific rotational position among the determined rotational positions. The controller may be configured by electronic circuitry and may include one or more processors.

As an example, as shown in fig. 13, the controller may determine six rotational positions P1, P2, P3, P4, P5, and P6 of the opening/closing member 220.

The controller may designate a rotational position of the opening/closing member 220 at a time point when the micro-switch 250 is turned off after the micro-switch 250 is turned on for five minutes as a first rotational position P1 among six rotational positions P1, P2, P3, P4, P5, and P6 of the opening/closing member 220.

According to an aspect of the present disclosure, since there is only one point of time when the micro switch 250 is turned off after the micro switch 250 is turned on for five seconds, a section in which the micro switch 250 is turned on for five seconds may correspond to the reference reset section.

Further, the controller may designate the rotational position of the opening/closing member 220 as the second rotational position P2 at a point of time when the micro switch 250 is turned on again after the micro switch 250 is turned on for about five seconds and turned off for about five seconds.

The first through sixth rotational positions P1 through P6 may be designated in the manner described above.

In the six rotational positions P1, P2, P3, P4, P5 and P6 of the opening/closing member 220, the contact terminal 251 of the micro switch 250 is located at contact terminal positions T1, T2, T3, T4, T5 and T6 shown in fig. 12.

Information on the rotational position of the opening/closing member 220 according to the time point when the micro switch 250 is turned on and off may be previously stored in a memory (e.g., in a Read Only Memory (ROM) type) in the controller.

Further, information on the opened and closed states of the

outlets

212a, 212b and 212c of the dispensing device 200 according to the respective rotational positions of the opening/closing member 220 and information on the ejection of the

ejection nozzles

311, 313, 330 and 340 according to the opened and closed states of the

outlets

212a, 212b and 212c may also be stored as a ROM type in the controller.

Accordingly, when a user inputs or selects a desired specific spray nozzle among the

spray nozzles

311, 313, 330 and 340, the controller may determine that an outlet of the

outlets

212a, 212b and 212c is to be opened or closed according to the user's input or selection, and determine a specific rotational position of the opening/closing member 220 according to the determined opening and closing states of the

outlets

212a, 212b and 212 c.

The controller may drive the motor 230 to rotate the opening/closing member 220 to the determined specific rotational position, and stop the driving of the motor 230 when the rotation of the opening/closing member 220 to the determined specific rotational position is completed.

According to an aspect of the present disclosure, when the opening/closing member 220 is at the first rotation position P1, as shown in fig. 14, only the second outlet 212b is opened, and the washing water may be dispensed only to the

rotating nozzles

311 and 313.

When the opening/closing member 220 is at the second rotation position P2, as shown in fig. 15, only the third outlet 212c is opened, and the washing water may be dispensed only to the right fixed nozzle 340.

The third and fourth rotational positions P3 and P4 of the opening/closing member 220 are not used.

When the opening/closing member 220 is at the fifth rotation position P5, as shown in fig. 16, only the first and

third outlets

212a and 212c are opened, and the washing water may be distributed only to the left and right

fixed nozzles

330 and 340.

When the opening/closing member 220 is in the sixth rotation position P6, as shown in fig. 17, only the first outlet 212a is opened, and the washing water may be dispensed only to the left stationary nozzle 330.

FIG. 18 is an exploded view of the floor, floor cover and motor of the wash tank of the dishwasher of FIG. 1. FIG. 19 is a cross-sectional view of the floor, floor cover and motor of the dishwasher of FIG. 1. FIG. 20 is an exploded view of the vanes, rail assembly, spray nozzle assembly and floor cover of the dishwasher of FIG. 1.

A floor cover of a dishwasher according to an embodiment of the present disclosure will be described with reference to fig. 18 to 20.

The dishwasher 1 may include a floor cover 600 coupled to one rear side of the floor 35 of the washing tub 30.

The floor cover 600 may serve to seal the motor through-hole 37 and the flow passage through-hole 38 formed in the floor panel 35, support the motor 530 configured to drive the vane 400, and fix the rail assembly 430 and the nozzle assembly 300 of the dishwasher 1.

As described above, the nozzle assembly 300 may include the upper rotary nozzle 311, the middle rotary nozzle 313, the left fixed nozzle 330, and the right fixed nozzle 340.

The guide rail assembly 430 may guide the movement of the vane 400, and an example configuration of the guide rail assembly 430 will be described later.

The floor protrusion 36 may be formed at the rear of the floor panel 35 and protrude to be combined with the floor cover 600. A motor through-hole 37 through which a motor 530 for driving the blade 400 passes, and a flow passage through-hole 38 through which a flow passage connecting the nozzle assembly 300 and the dispensing device (refer to 200 in fig. 3) passes may be formed in the floor protrusion 36.

The motor 530 may be mounted on the bottom surface of the floor cover 600. When the floor cover 600 is separated from the floor panel 35, the motor 530 can be taken out together with the floor cover 600 through the motor through-hole 37.

For example, a plurality of hose connection units of the floor cover 600 may pass through the runner through-hole 38.

The floor cover 600 may include: a shaft through hole 640 through which a driving shaft 531 of the motor 530 passes; a hose connection unit protruding downward to be coupled with

hoses

271a, 271b and 271c extending from the dispenser 200 and inserted into the flow passage through-holes 38 of the floor protrusion 36; nozzle inflow

port connection units

651a, 651b, and 651c protruding upward to be combined with the

inflow ports

315, 333, and 343 of the nozzle assembly 300; a connection hole 620 configured to fix the nozzle assembly 300 and the rail assembly 430; and one or more rotation guides 610 protruding to guide rotation of the blade 400. As shown in fig. 18 and 19, the

hose connection units

652b and 652c correspond to the

hoses

271b and 271 c. An additional hose connection unit, which is not visible in the drawing, also corresponds to the hose 217a and is disposed below the nozzle inflow port connection unit 651 a.

The floor cover 600 may be closely combined with the top surface of the floor protrusion 36. The fixing cap 680 may be combined with the hose connection unit of the floor cover 600 so that the floor cover 600 may be fixed to the floor protrusion 36.

A sealing member 670 may be provided or placed between the floor cover 600 and the floor protrusion 36 to prevent the washing water stored in the washing tub 30 from leaking through the motor through-hole 37 and the flow passage through-hole 38 of the floor protrusion 36. The sealing member 670 may be formed of, for example, a rubber material.

The motor mounting unit 630, on which the motor 530 for driving the blade 400 is mounted, may be disposed or placed on the bottom surface of the floor cover 600. The driving shaft 531 of the motor 530 may pass through the shaft through hole 640 of the floor cover 600 and protrude into the washing tub 30. A driving pulley (refer to 500 in fig. 21) to be described later may be coupled with the driving shaft 531 of the motor 530 and rotate together with the driving shaft 531.

A sealing member 660 may be provided or disposed in the shaft through hole 640 to prevent the washing water stored in the washing tub 30 from leaking through the shaft through hole 640. The sealing member 660 may be a mechanical sealing device configured to seal the shaft through-hole 640, and may allow effective rotation of the drive shaft 531. As can be seen from fig. 19, a portion of the shaft 531 may protrude through the shaft through hole 640 and the sealing member 660.

The top surface of the floor cover 600 may be inclined at a predetermined angle (refer to θ in fig. 19) based on a reference horizontal plane (refer to H in fig. 19).

The top surface of the floor cover 600 may be inclined to prevent debris (e.g., food, dirt, etc.) from accumulating on the floor cover 600 or traveling toward the

stationary spray nozzles

330 and 340. In the dishwasher 1 according to the embodiment of the present disclosure, since the

stationary spray nozzles

330 and 340 do not move unlike the

rotary nozzles

311 and 313, debris (e.g., food, dirt, etc.) may remain and accumulate. Accordingly, accumulation of debris (e.g., food, dirt, etc.) can be prevented by the above-described structure.

The inclination angle θ formed by the top surface of the floor cover 600 and the reference horizontal plane H may be about 3 ° or more.

Further, the end of the floor cover 600 may be spaced apart from the floor 35 by a predetermined distance (refer to S in fig. 19) because it is difficult to completely attach the floor cover 600 to the floor 35 due to manufacturing and assembling errors. In this case, however, it is possible to prevent debris (e.g., food, dirt, etc.) from being caught in the fine gap between the end of the floor cover 600 and the floor panel 35. The distance S between the end of the floor cover 600 and the floor panel 35 may be about 5mm or more.

The guide rail assembly 430 and the nozzle assembly 300 may be combined with the floor cover 600. The floor cover 600, the guide rail assembly 430, and the nozzle assembly 300 may be tightly fixed by the connection member 690. To this end, coupling holes (coupling holes) 620, 453, 337, and 347 may be formed at corresponding positions of the floor cover 600, the rail assembly 430, and the nozzle assembly 300, respectively. The connecting member 690 may, for example, comprise one or more screws. The connecting members may also include, for example, bolts, pins, rivets, anchors, adhesives, and the like.

Due to the above-described structure, the guide rail assembly 430 and the nozzle assembly 300 may be fixed to each other and aligned with each other.

In the dishwasher 1 according to the embodiment of the present disclosure, the washing water sprayed from the fixed

spray nozzles

330 and 340 of the nozzle assembly 300 may not be directly sprayed toward the dishes but reflected by the vanes 400 combined with the guide rail assembly 430 and sprayed toward the dishes. Therefore, the positions of the fixed

spray nozzles

330 and 340 and the rail assembly 430 should preferably be precisely aligned, and this requirement or preference can be satisfied by the above-described coupling structure.

FIG. 21 is a view of the vanes and drive arrangement of the dishwasher of FIG. 1, which is an exploded view of the drive arrangement. FIG. 22 is a view of a belt and belt support of the dishwasher of FIG. 1. FIG. 23 is a cross-sectional view of a rail, belt mount and blade mount of the dishwasher of FIG. 1. FIG. 24 is a view of the guide rails, belt, drive pulley and rear bracket of the dishwasher of FIG. 1. FIG. 25 is a cross-sectional view of the guide rail, belt, drive pulley and rear bracket of the dishwasher of FIG. 1. FIG. 26 is a view of the track, belt, idler wheel and front rack of the dishwasher of FIG. 1. FIG. 27 is a cross-sectional view of the track, belt, idler wheel and front rack of the dishwasher of FIG. 1.

A blade of a dishwasher according to an embodiment of the present disclosure and a driving device thereof will be described with reference to fig. 21 to 27.

The dishwasher 1 according to the embodiment of the present disclosure may include a vane 400 configured to reflect the washing water sprayed from the fixed

nozzles

330 and 340. The vane 400 may linearly reciprocate (move) in a direction in which the washing water is sprayed from the fixed

spray nozzles

330 and 340 and/or in a direction opposite to the direction in which the washing water is sprayed from the fixed

spray nozzles

330 and 340.

The dishwasher 1 according to the embodiment of the present disclosure may include a driving device 420 configured to linearly reciprocate the vane 400.

The driving device 420 may include a motor 530 configured to generate a driving force and a guide rail assembly 430 configured to guide the movement of the blade 400.

The guide rail assembly 430 may include: a guide rail 440 configured to guide the movement of the blade 400 and having an inner space 441; a driving pulley 500 connected to the motor 530 and configured to rotate; a belt 520 connected to the driving pulley 500, configured to rotate, and disposed in the inner space 441 of the guide rail 440; an idler 510 connected to the belt 520 to rotatably support the belt 520; a belt bracket 480 provided in the inner space 441 of the guide rail 400 to be combined with the belt 520 and linearly reciprocated; a blade bracket 490 disposed outside the guide rail 400 to be combined with the belt bracket 480 and linearly reciprocated, wherein the blade bracket 490 is combined with the blade 400; a rear bracket 450 configured to rotatably support the driving pulley 500 and coupled with a rear end portion of the guide rail 440; and a front bracket 460 configured to rotatably support the idle pulley 510 and coupled to a front end portion of the guide rail 440.

The guide rail 440 may be formed of a metal material. The guide rail 440 may be elongated in forward and reverse directions and may be disposed or placed midway between the left wall 33 and the right wall 34 of the washing tub.

The guide rail 440 may have a tubular shape in which an opening 445 is formed in a substantially lower portion. That is, the guide rail 440 may include an inner space 441, an upper wall 442, a lower wall 444, two side walls 443, and an opening 445 formed in the lower wall 444. The lower opening 445 may extend from one longitudinal end of the rail 440 to the other longitudinal end thereof.

The guide rail 440 may be provided or disposed in a pipe shape and the belt 520 may be provided in the inner space 441 of the guide rail 400, so that the belt 520 may be prevented from being contacted and stopped by the dishes of the wash tank 30 and/or the belt 520 may be prevented from being contacted and corroded by the wash water of the wash tank 30.

An opening 445 may be formed in the lower wall 444 of the rail 440 so that the band 520 disposed in the inner space 441 of the rail 440 may be connected to the blade 400 disposed or placed outside the rail 400 to transmit the driving force of the band 520 to the blade 400.

The belt 520 may be wound about the driving pulley 500 and the idle pulley 510, and may form a closed curve. When the motor 530 is driven, the belt 520 may rotate in a direction in which the motor 530 rotates. The belt 520 may be formed of, for example, a resin material containing aramid fibers in consideration of tensile strength and cost.

The tooth 521 may be formed on an inner side surface of the belt 520 and transmit a driving force of the belt 520 to the belt supporter 480.

Similar to the belt 520, a belt bracket 480 may be disposed in the inner space 441 of the guide rail 400 and may be coupled with the tooth 521 of the belt 520 and move together with the belt 520. To this end, the belt bracket 480 may have a tooth-shaped coupling unit 481 combined with the tooth shape 521 of the belt 520.

In addition, belt bracket 480 may include

legs

482 and 483 that are supported by rail 400.

Legs

482 and 483 may include: at least one lateral leg 482, which extends laterally and is supported by the side wall 443 of the guide rail 400; and at least one lower leg 483 extending downward and supported by the lower wall 444 of the guide rail 400.

Lateral legs 482 may be disposed or positioned to be elastically deformable to reduce noise and vibration caused by impact and friction between belt bracket 480 and rail 400 during movement of belt bracket 480 and to allow effective movement of belt bracket 480.

The lateral legs 482 may be a leaf spring type resilient material. That is, each lateral leg 482 may have a curved plate that elastically deforms between a relaxed shape and a compressed shape.

In addition, the belt bracket 480 may have a connection unit 484 to be combined with the blade bracket 490. The connection unit 484 may include a connection hole 485 into which the connection member 496 may be inserted. The connecting member 496 may include, for example, one or more screws. The connecting members may also include, for example, bolts, pins, rivets, anchors, adhesives, and the like.

The blade mount 490 may be coupled with the belt mount 480 and move together with the belt mount 480, and transmit the driving force of the belt mount 480 to the blade 400. Blade support 490 may be disposed or placed around the outside surface of rail 440.

The blade support 490 may be coupled to the belt support 480 through the lower opening 445 of the guide 440. To this end, the blade support 490 may have a coupling hole 491 to couple with the band support 480. Accordingly, the blade holder 490 may be coupled with the band holder 480 by connecting the coupling hole 491 of the blade holder 490 and the coupling hole 485 of the band holder 480 with the connection member 496. The connecting member 496 may include, for example, one or more screws. The connecting members may also include, for example, bolts, pins, rivets, anchors, adhesives, and the like.

The connecting member 496 may be advanced from the lower side to the upper side and sequentially connected to the connecting hole 491 of the blade holder 490 and the connecting hole 485 of the band holder 480.

The coupling protrusion 493 may be formed on the blade support 490, and the blade 400 is detachably coupled with the coupling protrusion 493. The coupling protrusion 493 may include a coupling shaft unit 494 protruding to the side and a separation preventing unit 495 formed in an end of the coupling shaft unit 494 to prevent the separation of the vane 400. Referring to fig. 28, the separation preventing unit 495 may have a larger diameter than the coupling shaft unit 494. The coupling protrusion 493 may be provided on the blade holder 490 and protrude from one or both sides of the blade holder 490. The coupling protrusion 493 may protrude outward from the blade support 490 toward the left and/or right side of the washing tub 30.

The driving pulley 500 may include a rotation shaft 501, a shaft coupling unit 503 coupled to a driving shaft 531 of a motor 530 to receive a driving force, and a belt coupling unit 502 combined with the belt 520.

Referring to fig. 24 and 25, the rear bracket 450 may rotatably support the driving pulley 500 and be combined with the rear end portion of the guide rail 440. The rear bracket 450 may include a pulley support surface 451 configured to support the rotation shaft 501 of the driving pulley 500, a rail support surface 452 configured to support the rear end portion of the rail 440, and a coupling hole (coupling hole) 453 for coupling with the floor cover 600.

Referring to fig. 26 and 27, the idle gear 510 may include a rotation shaft 511 and a belt coupling unit 512 combined with a belt 520.

The front bracket 460 may include: a front top mount 461; a front bottom bracket 465 coupled to a lower portion of the front top bracket 461; and a pulley bracket 467 provided or placed between the front top bracket 461 and the front bottom bracket 465 to be movable in the longitudinal direction of the guide rail 440. Pulley bracket 467 rotatably supports idler pulley 510.

The front top bracket 461 may include a pulley support surface 462 configured to support the rotation shaft 511 of the idle pulley 510 and a rail support surface 463 configured to support the front end portion of the rail 440.

The front bottom bracket 465 may be coupled with the lower portion of the front top bracket 461 by a fastening structure. The front bottom bracket 465 may have a coupling protrusion 466 coupled with the bottom plate 35 of the wash tank 30.

Pulley bracket 467 may include a pulley support surface 468 configured to support rotational shaft 511 of idler 510.

In addition, the guide rail 440, the belt 520, the driving pulley 500, the rear bracket 450, the idle pulley 510, and the front bracket 460 may be assembled with each other due to the tension of the belt 520.

That is, the driving pulley 500 may be applied with a pressure in a direction in which the driving pulley 500 approaches the guide rail 400 due to the tension of the belt 520, and the applied pressure may be transmitted to the rear bracket 450 through the pulley supporting surface 451 of the rear bracket 450. Thus, the rear bracket 450 is tightly coupled with the rear end of the guide rail 440.

Further, the idle pulley 510 may be applied with a pressure due to the tension of the belt 520 in a direction in which the idle pulley 510 approaches the guide rail 440, and the applied pressure may be transmitted to the front bracket 460 through the pulley support surface 462 of the front bracket 460. Thus, the front bracket 460 is closely coupled with the front end of the guide rail 440.

In addition, the front bracket 460 may further include an elastic member 470 for maintaining the tension of the belt 520. When the belt 520 is thermally expanded due to the internal heat of the wash tank 30, the belt 520 is elongated to reduce the tension of the belt 520. When the tension of the belt 520 is reduced, the blade 400 cannot be driven efficiently.

One end of the elastic member 470 may be supported by the front bracket 460 and the other end of the elastic member 470 may be supported by the pulley bracket 467. To this end, elastic member support surfaces 464 and 469 may be formed on front bracket 460 and pulley bracket 467, respectively.

For example, the elastic member 470 may be a compression spring. Since the front bracket 460 is supported at the guide rail 440 by the rail support surface 463, the elastic force of the elastic member 470 may act on the pulley bracket 467. That is, due to the elastic force of the elastic member 470, the pulley bracket 467 may be applied with a pressure away from the guide rail 440.

In this case, since the pulley bracket 467 is applied with a pressing force due to the tension of the belt 520 in the direction in which the pulley bracket 467 approaches the guide rail 440, the pulley bracket 467 moves to a position in which an equilibrium is maintained between the tension of the belt 520 and the elastic force of the elastic member 470.

That is, when the band 520 is elongated to reduce the tension and the elastic force of the elastic member 470 becomes higher than the tension of the band 520, the pulley bracket 467 moves away from the guide rail 440 due to the elastic force of the elastic member 470. Thus, as pulley bracket 467 moves away from rail 440, belt 520 is again stretched taut and the tension of belt 520 is restored.

Due to the above-described structure, even if the belt 520 is elongated due to thermal expansion, the belt 520 is pulled by moving the pulley bracket 467, so that the tension of the belt 520 can be kept constant and the reliability of the driving device 420 can be improved.

An assembly sequence of the rail assembly 430 of the dishwasher according to an embodiment of the present disclosure will be described.

As shown in fig. 22, a belt support 480 may be coupled to the belt 520.

As shown in fig. 23, a set of belts 520 and belt supports 480 may be disposed in the interior space 441 of the guide rail 440. Next, the blade support 490 may be coupled with the set of bands 520 and band supports 480 using the connecting member 496.

As shown in fig. 24, the rear bracket 450 may be assembled with the lengthwise rear end of the guide rail 440. Next, the driving pulley 500 may be combined with the belt 520.

As shown in fig. 26, the front top mount 461 may be combined with the longitudinal front end of the guide rail 440. Next, belt 520, idler 510, pulley bracket 467, and elastic member 470 are combined. Next, the set of belt 520, idler 510, pulley bracket 467, and elastic member 470 is pressed into front top bracket 461. Next, the front bottom bracket 465 is combined with the front top bracket 461.

FIG. 28 is a view of a blade and blade holder of the dishwasher of FIG. 1. FIG. 29 is a perspective view of a blade of the dishwasher of FIG. 1. FIG. 30 is an exploded view of a portion of a blade and blade holder of the dishwasher of FIG. 1.

A blade according to an embodiment of the present disclosure will be described with reference to fig. 28 to 30.

Blade 400 may be elongated in a vertical direction with respect to rail 440.

The blade 400 may include: a reflection unit 401 configured to reflect the washing water sprayed from the fixed

nozzles

330 and 340; an upper supporting unit 410 formed by bending the reflecting unit 401; a rear support unit 411 formed by bending the upper support unit 410; a cap unit 404 disposed or placed in a longitudinal central portion of the reflection unit 401; a rotation fastening unit 409 provided or placed to interface with a rotation guide (refer to 610 in fig. 31) of the floor cover 600; a reinforcing rib 414 provided or placed to reinforce the strength of the reflection unit 401, the upper support unit 410, and the rear support unit 411; a horizontal support 412 supported by a top surface of the blade support 490; and a vertical support 413 supported by a side surface of the blade support 490.

The reflection unit 401 may include

reflection surfaces

402a and 402b obliquely disposed or placed to reflect the washing water. The reflection surfaces 402a and 402b may include

reflection surfaces

402a and 402b having different inclinations to change an angle at which the washing water is reflected, and may be alternately arranged in the longitudinal direction. As shown in fig. 28, there may be three reflective surfaces 402b, although the present disclosure is not so limited. For example, there may be no reflective surface 402b, and there may be one, two, or more than three reflective surfaces 402 b.

The cap unit 404 may include a coupling groove 405 combined with the blade holder 490, and a rotation stopping unit 408, the rotation stopping unit 408 being configured to limit a rotation range of the blade 400 when the blade 400 is rotated by the rotation guide 610 of the floor cover 600.

The coupling protrusion 493 of the blade holder 490 may be combined with the coupling groove 405 of the blade 400. For example, the coupling shaft unit 494 of the coupling protrusion 493 may be inserted into the coupling groove 405 of the vane 400. The coupling shaft unit 494 may rotatably support the vane 400.

As shown in fig. 30, the coupling groove 405 of the vane 400 may be formed by an elastic hook 407. When the coupling shaft unit 494 of the vane support 490 is being pressed into or taken out of the coupling groove 405 of the vane 400, the elastic hooks 407 are elastically deformed to be spaced apart from each other. When the insertion or separation of the coupling shaft unit 494 of the blade holder 490 is completed, the elastic hook 407 may be restored to the original state. In the above-described structure, the blade 400 may be mounted on the blade holder 490 or separated from the blade holder 490.

The rollers 415 may be disposed or placed at both longitudinal ends of the blade 400 to allow smooth movement of the blade 400. A roller supporting unit (refer to 39 in fig. 47) for supporting the roller 415 may be provided or placed at the bottom plate 35 of the washing tub 30.

Fig. 31 to 33 are views illustrating a rotating operation of a blade of the dishwasher of fig. 1. Fig. 34 is a view illustrating an operation of reflecting washing water by the vanes in the vane moving section of the dishwasher of fig. 1. Fig. 35 is a view illustrating an operation of reflecting washing water by a vane in a vane non-moving section of the dishwasher of fig. 1.

The moving section, the non-moving section, and the rotating operation of the blade according to the embodiment of the present disclosure will be described with reference to fig. 31 to 35.

In the dishwasher 1 according to the embodiment of the present disclosure, the vane 400 reflects the washing water sprayed from the fixed

spray nozzles

330 and 340 toward the dishes. Since the fixed

spray nozzles

330 and 340 spray the washing water in a substantially horizontal direction, the fixed

spray nozzles

330 and 340 and the vane 400 are disposed substantially parallel to each other. Accordingly, the vane 400 can be restricted from moving in the region in which the fixed

injection nozzles

330 and 340 are disposed.

For example, referring to fig. 34 and 35, dishwasher 1 may include a vane moving section I1 in which vanes 400 may move and a vane non-moving section I2 in which vanes 400 may be restricted from moving.

The blade 400 of the dishwasher 1 according to the embodiment of the present disclosure may be rotatably disposed or placed (e.g., at a predetermined angle) to wash dishes received in the blade non-moving section I2.

As described above, the rotation guide 610 may be formed in the floor cover 600 and may protrude to guide the movement of the blade 400, and the rotational fastening unit 409 may be formed in the blade 400 to interfere with the rotation guide 610. The rotational fastening unit 409 may form a rotational axis of the blade 400 and at the same time be formed at a higher level than the coupling protrusion 493 of the blade holder 490, the blade holder 490 being configured to transmit a driving force to the blade 400.

The rotation guide 610 may include a guide surface 611, and the guide surface 611 is contacted by the rotation fastening unit 409 and forms a curved surface to allow effective rotation of the blade 400.

When the blade 400 comes from the blade moving section I1 to the blade non-moving section I2 and the rotational fastening unit 409 of the blade 400 interferes with the guide surface 611 of the rotation guide 610 of the floor cover 600, the blade 400 rotates about the coupling protrusion 493 of the blade bracket 490. For example, when the blade 400 moves toward the rear wall 32 and the rotational fastening unit 409 of the blade 400 interferes with the guide surface 611 of the rotational guide 610, the blade 400 may rotate forward or toward the rear wall 32. Due to the rotation of the blade 400, the direction or angle of the washing water reflected by the blade 400 may be changed compared to the direction or angle of the washing water reflected by the blade 400 before the rotation fastening unit 409 of the blade 400 interferes with the guide surface 611 of the rotation guide 610. Accordingly, the vanes 400 reflect the washing water toward the dishes received in the non-moving section I2.

Fig. 36 is a view showing a sump, a coarse filter and a fine filter of the dishwasher of fig. 1. Fig. 37 is an exploded view of a sump, a coarse filter, a fine filter and a micro filter of the dishwasher of fig. 1. Fig. 38 is a sectional view taken along line I-I of fig. 36. Fig. 39 is an exploded view of part B of fig. 38. Fig. 40 is a sectional view taken along line II-II of fig. 38. Fig. 41 is an exploded view of part C of fig. 40. FIG. 42 is a plan view of the sump and coarse filter of the dishwasher of FIG. 1, illustrating a locking operation of the coarse filter. FIG. 43 is a side view of a coarse filter of the dishwasher of FIG. 1. FIG. 44 is a view of the sump and coarse filter of the dishwasher of FIG. 1, illustrating a locking operation of the coarse filter. FIG. 45 is a cross-sectional view of a sump, a coarse filter and a micro-filter of the dishwasher of FIG. 1. FIG. 46 is an exploded plan view of a coarse filter and a portion of a fine filter of the dishwasher of FIG. 1. FIG. 47 is a plan view of a lower portion of the wash tank of the dishwasher of FIG. 1.

The dishwasher 1 according to an embodiment of the present disclosure may include: a water storage tank 100 configured to store washing water; a circulation pump 51 configured to circulate the washing water of the sump 100 into the

spray nozzles

311, 313, 330 and 340; a drain pump 52 configured to discharge the washing water of the water storage tank 100 out of the main body 10 together with the residue (e.g., food, filth, etc.); and filters 120, 130, and 140 configured to filter debris (e.g., food, dirt, etc.) contained in the washing water.

A drain (refer to 50 in fig. 47) for draining the washing water into the sump 100 is formed in the bottom plate 35 of the washing tub 30. The bottom plate 35 of the wash tank 30 may be inclined toward the drain 50 such that the wash water is guided toward the drain 50 due to the wash water's own weight (i.e., due to gravitational force).

The water reservoir 100 may have a hemispherical shape with a generally or substantially open top surface. The sump 100 may include a bottom portion 101, a sidewall portion 103, a water storage chamber 110 formed on the bottom portion 101 and the sidewall portion 103 to store wash water, a circulation port 107 connected to the circulation pump 51, and a discharge port 108 connected to the drain pump 52.

The

filters

120, 130 and 140 may include a fine filter 120 installed at the drain 50 of the bottom plate 35 and a coarse filter 140 and a fine filter 130 installed at the sump 100.

The coarse filter 140 may have a substantially cylindrical shape. The coarse filter 140 may be installed in an inner side surface of the sidewall portion 103 of the sump 100.

The coarse filter 140 may have a filter unit 142 configured to filter debris (e.g., food, dirt, etc.) having a relatively large size and a handle 141 for mounting the coarse filter 140. The filtering unit 142 of the coarse filter 140 may be formed at the circumferential surface of the coarse filter 140.

The coarse filter 140 may pass through the through-hole 139 of the micro filter 130 and the through-hole 122 of the fine filter 120, and may be installed on the water storage tank 100. An upper portion of the coarse filter 140 may protrude into the washing tub 30, and a lower portion of the coarse filter 140 may protrude into the residue trap chamber 111 of the sump 100. The residue trap chamber 111 will be described below.

The fine filter 120 may have a filter unit 121 configured to filter debris (e.g., food, dirt, etc.) having a relatively medium size or more and a through hole 122 through which the coarse filter 140 passes. The fine filter 120 may be installed on the drain 50 of the floor 35 of the wash tank 30 in a substantially horizontal direction. The fine filter 120 may be inclined such that the washing water is directed toward the through-hole 122 due to the washing water's own weight (i.e., due to gravitational force).

The washing water of the washing tub 30 may flow along the inclined fine filter 120 to the coarse filter 140. However, some of the washing water and debris (e.g., food, dirt, etc.) may pass through the filtering unit 121 of the fine filter 120 and directly flow into the water storage chamber 110 of the sump 100.

The micro filter 130 may have a filter unit 131 configured to filter debris (e.g., food, dirt, etc.) having a relatively small size or a larger size and having a planar shape, frames 132, 133, and 135 configured to support the filter unit 131, and a through hole 139 through which the coarse filter 140 passes.

The

frames

132, 133, and 135 may include an upper frame 132, a lower frame 133, and side frames 135. The microfilter 130 may be mounted to the sump 100 such that the lower frame 133 abuts the bottom portion 101 of the sump 100 and the side frames 135 abut the side wall portions 103 of the sump 100.

The micro-filter 130 may divide the water storage chamber 110 of the water storage tank 100 into the residue trap chamber 111 and the circulation chamber 112. For example, as shown in fig. 38, the residue trap chamber 111 may be disposed closer to the drain pump 52 than the circulation chamber 112. The circulation chamber 111 may be disposed closer to the circulation pump 51 than the residue trap chamber 111.

The drain pump 52 may be connected to the residue trap compartment 111, and the circulation pump 51 may be connected to the circulation compartment 112.

As described above, since the lower portion of the coarse filter 140 is disposed or placed to protrude into the residue trap chamber 111, the washing water and the residue (e.g., food, dirt, etc.) contained in the washing water having passed through the coarse filter 140 flow into the residue trap chamber 111.

The washing water having flowed into the residue trap chamber 111 may pass through the micro filter 130 and flow into the circulation chamber 112. However, since the residue (e.g., food, filth, etc.) contained in the washing water that has flowed into the residue trap chamber 111 cannot pass through the micro filter 130, the residue (e.g., food, filth, etc.) cannot flow into the circulation chamber 112 but remains in the residue trap chamber 111.

The residue (e.g., food, filth, etc.) caught in the filth trap chamber 111 may be discharged out of the main body 10 together with the washing water when the drain pump 52 is driven.

In addition, the micro filter 130 may be closely attached to the bottom portion 101 and the sidewall portion 103 of the water storage tank 100 to prevent the residue (e.g., food, filth, etc.) of the filth trap chamber 111 from flowing through the gap between the micro filter 130 and the water storage tank 100 into the circulation chamber 112.

For this, a lower sealing groove 134 may be formed in the lower frame 133 of the micro filter 130, and a side sealing protrusion 136 may be formed on the side frame 135 such that it protrudes toward the side wall part 103. In order to correspond to the lower sealing groove 134 and the side sealing protrusion 136, the lower sealing protrusion 102 may be formed on the bottom portion 101 of the water storage tank 100 and inserted into the lower sealing groove 134, and the side sealing groove 104 into which the side sealing protrusion 136 is inserted may be formed in the sidewall portion 103 of the water storage tank 100.

The sealing between the micro-filter 130 and the sump 100 can be enhanced by using the lower sealing protrusion 102 and the side sealing protrusion 136 and the lower sealing groove 134 and the side sealing groove 103.

Meanwhile, after the coarse filter 140 is vertically inserted downward into the water storage tank 100, the coarse filter 140 may be rotated from the unlocked position to the locked position and mounted on the water storage tank 100.

For this, the mounting protrusion 143 may be formed on the outer circumferential surface of the coarse filter 140, and the mounting groove 105 may be formed in the inner side surface of the sidewall portion 103 of the water storage tank 100. The mounting protrusion 143 may be inserted into the mounting groove 105 in a horizontal direction when the coarse filter 140 is rotated from the unlocked position to the locked position.

The mounting projection 143 may have an upward inclined surface 144, and the upward inclined surface 144 is inclined upward in a direction in which the coarse filter 140 is rotated from the unlock position to the lock position. The mounting groove 105 may have a downward inclined surface 106, the downward inclined surface 106 being inclined in a direction in which the coarse filter 140 is rotated from the unlock position to the lock position.

Due to the above-described structure, when the coarse filter 140 is rotated from the unlocked position to the locked position, the coarse filter 140 can be moved downward while the upward inclined surfaces 144 of the mounting protrusions 143 slide on the downward inclined surfaces 106 of the mounting grooves 105.

When the coarse filter 140 is rotated from the unlocked position to the locked position, the coarse filter 140 may apply pressure downward to the micro filter 130 while moving downward. To this end, the coarse filter 140 may have a downward pressure surface 145, the downward pressure surface 145 being horizontally formed to apply pressure downward to the micro filter 130. The micro-filter 130 may have a downward facing surface 137 formed horizontally (e.g., on a portion of the upper frame 132), and pressure is applied to the downward facing surface 137 by a downward pressure surface 145.

Thus, when the coarse filter 140 is rotated from the unlocked position to the locked position, the coarse filter 140 applies downward pressure to the micro filter 130, thereby strengthening the seal between the lower frame 133 of the micro filter 130 and the bottom portion 101 of the sump 100 and preventing the micro filter 130 from being dislodged.

Further, the coarse filter 140 may have a lateral pressure surface 146 formed by expanding a portion of an outer circumferential surface of the coarse filter 140 outward from a radial direction. The lateral pressure surface 146 may apply pressure laterally to the micro filter 130 as the coarse filter 140 is rotated from the unlocked position to the locked position. That is, the coarse filter 140 may have an expanded shape or an elliptical shape.

The microfilter 130 may have a lateral corresponding surface 138 with pressure applied laterally to the lateral corresponding surface 138 through a lateral pressure surface 146. For example, the lateral corresponding surface 138 may be disposed as or correspond to an inner wall of the upper frame 132 forming the through hole 139.

Due to the above-described structure, when the coarse filter 140 is rotated from the unlocked position to the locked position, pressure is laterally applied to the micro filter 130, thereby further enhancing the seal between the side frame 135 of the micro filter 130 and the side wall portion 130 of the water storage tank 100.

Meanwhile, as shown in fig. 47, the coarse filter 140 may be disposed to be inclined toward one of the two

sidewalls

33 and 34 of the washing tub 30. For example, the coarse filter 140 may be disposed closer to the left wall 33 than to the right wall 34. Alternatively, the coarse filter 140 may be disposed closer to the right wall 34 than to the left wall 33. Further, the coarse filter 140 may additionally or alternatively be disposed closer to the rear wall 32 than to the door, or vice versa. By providing coarse filter 140, coarse filter 140 may not interfere with guide 440, but may be easily separated.

Fig. 48 is a perspective view of a dispensing device according to a second embodiment of the present disclosure. Fig. 49 is a plan view illustrating the operation of the dispensing device of fig. 48.

A dispensing device according to an embodiment of the present disclosure will be described with reference to fig. 48 and 49. The same reference numerals are used to denote the same elements, and the description of the elements or features that have been described previously may be omitted.

The distribution means 700 may distribute the washing water pumped by the circulation pump (refer to 51 in fig. 3) to the upper rotating nozzle (refer to 311 and 312 in fig. 3), the lower left fixed nozzle 330, and the lower right fixed nozzle 340.

The dispensing device 700 may include a generally cylindrical housing 710, an opening/closing member 720 rotatably disposed or placed within the housing 710, and a motor 730 configured to generate a rotational force to rotate the opening/closing member 720.

The plurality of

outlets

711, 712, and 713 may be formed in any one of the top surface or the bottom surface of the housing 710, that is, in the axial direction of the housing 710. The plurality of

outlets

711, 712, and 713 may include a first outlet 711, a second outlet 712, and a third outlet 713. The first outlet 711, the second outlet 712, and the third outlet 713 may be arranged in a radial direction.

The first outlet 711 may be connected to a first hose 741 and supplies washing water to the upper

rotary nozzles

311 and 312. The second outlet 712 may be connected to a second hose 742 and supplies the washing water to the lower left fixed nozzle 330. The third outlet 713 may be connected to the third hose 743 and supplies the washing water to the lower right fixed nozzle 340.

The inlet 719 may be formed in a circumferential surface of the housing 710. An inlet hose 749 may be connected to the inlet 719 and a circulation pump 51 connected to the inlet hose 749.

The opening/closing member 720 may have a general disk shape. The opening/closing member 720 may be closely attached to the top surface of the housing 710 in which the

outlets

711, 712, and 713 are formed. The

outlets

711, 712, and 713 may be opened and closed by rotating the opening/closing member 720. The opening/closing member 720 may rotate about the axial direction of the housing 710.

To this end, the opening/closing member 720 may include a first flow hole 721,

second flow holes

722a and 722b, and

third flow holes

723a and 723b corresponding to the first outlet 711, the second outlet 712, and the third outlet 713, respectively. For example, the third outlet 713 may be disposed closest to the middle of the top surface of the opening/closing member 720, the first outlet 711 may be disposed farthest from the middle of the top surface of the opening/closing member 720, and the second outlet 712 may be disposed between the first outlet 711 and the third outlet 713. However, the present disclosure is not so limited, and the outlets may be arranged differently. Further, as shown in fig. 48, the outlets are arranged in a radial direction. Alternatively, however, some or all of the outlets may be arranged such that the outlets are not all aligned in the same radial direction. Further, each outlet may have the same diameter or may have a different diameter.

Accordingly, when the opening/closing member 720 is rotated and stopped at a position where the flow hole and the outlet face each other, the corresponding outlet is opened.

Referring to fig. 49, since the first flow hole 721 of the opening/closing member 720 is at a position corresponding to the first outlet 711 of the housing 710 in the state shown in fig. 49, the first outlet 711 is opened and the washing water may be supplied to the upper

rotating nozzles

311 and 312.

In this state, when the opening/closing member 720 is rotated clockwise or counterclockwise by a predetermined angle (e.g., about 90 ° clockwise), the second flow through hole 722b of the opening/closing member 720 is at a position corresponding to the second outlet 712 of the housing 710. Accordingly, the second outlet 712 is opened, and the washing water may be supplied to the lower left fixed nozzle 330.

In this state, when the opening/closing member 720 is further rotated by a predetermined angle (e.g., about 90 ° clockwise) in the clockwise or counterclockwise direction, the second and

third flow holes

722a and 723b of the opening/closing member 720 are at positions corresponding to the second and

third outlets

712 and 713, respectively, of the case 710. Accordingly, the second outlet 712 and the third outlet 713 are opened, so that the washing water may be supplied to the lower left fixed nozzle 330 and the lower right fixed nozzle 340.

In this state, when the opening/closing member 720 is further rotated by a predetermined angle (e.g., about 90 ° clockwise) in the clockwise or counterclockwise direction, the third flow hole 723a of the opening/closing member 720 is at a position corresponding to the third outlet 713 of the housing 710. Accordingly, the third outlet 713 is opened so that the washing water may be supplied to the lower right fixed nozzle 340. As will be understood by those of ordinary skill in the art, the degree of rotation of the open/close member 720 may vary and may depend on the number of states or dispensing combinations, the number of outlets, etc.

As described above, the distribution means according to the example embodiments disclosed herein may be configured such that the outlet is formed in the circumferential surface of the housing, that is, in the radial direction of the housing, while the distribution means according to the embodiments as discussed above with reference to fig. 48 and 49 may be configured such that the outlet is formed in the top or bottom surface of the housing, that is, in the axial direction.

Reference numeral 731 denotes a rotation shaft of the motor 730. For example, the rotation shaft 731 of the motor 730 may correspond to a middle portion of the top surface of the housing 710 and/or the opening/closing member 720.

Fig. 50 is a perspective view of a dispensing device according to an embodiment of the present disclosure. Fig. 51 is a plan view illustrating the operation of the dispensing device of fig. 50. Fig. 52 is a side view illustrating the operation of the dispensing device of fig. 50. Fig. 53 is a perspective view of a dispensing device according to an embodiment of the present disclosure.

A dispensing device according to the present disclosure will be described with reference to fig. 50 to 52. The same reference numerals are used to denote the same elements, and the description of the elements or features that have been described previously may be omitted.

The distribution means 750 distributes the washing water pumped by the circulation pump (refer to 51 in fig. 3) to the upper rotating nozzles (refer to 311 and 312 in fig. 3), the lower left fixed nozzle 330, and the lower right fixed nozzle 340.

The dispensing instrument 750 may include a generally cylindrical housing 760, an opening/closing member 770 rotatably disposed or placed within the housing 760, and a motor 780 configured to generate a rotational force to rotate the opening/closing member 770. Reference numeral 781 denotes a rotation shaft of the motor 780. For example, the rotation shaft 781 of the motor 780 may correspond to the center of the top surface of the case 760 and/or the opening/closing member 770.

The first outlet 761 may be formed in either one of a top surface or a bottom surface 760a of the housing 760, that is, in an axial direction of the housing 760, and the second outlet 762 and the third outlet 763 may be formed in a circumferential surface 760b of the housing 760, that is, in a radial direction of the housing 760. The first outlet 761 may be an axial outlet and the second outlet 762 and the third outlet 763 may be radial outlets.

The first outlet 761 may be connected to the first hose 791 and supplies washing water to the upper

rotating nozzles

311 and 312. The second outlet 762 may be connected to a second hose 792 and supplies the washing water to the lower left fixed nozzle 330. The third outlet 763 may be connected to the third hose 793 and supply the washing water to the lower right fixed nozzle 340. As shown in fig. 50, the second and

third outlets

762, 763 may be arranged vertically with respect to each other such that they are vertically aligned in the axial direction. However, the present disclosure is not so limited, and the second and

third outlets

762 and 763 may be arranged perpendicularly with respect to each other such that they are not vertically aligned in the axial direction but are disposed at different positions of the circumferential surface 760b in the circumferential direction.

The inlet 769 may be formed in a circumferential surface of the case 760. An input hose 799 may be connected to the inlet 769 and the circulation pump 51 connected to the input hose 799.

The opening/closing member 770 may have a substantially cylindrical shape like the housing 760. The opening/closing member 770 may include an axial opening/closing unit 770a configured to open and close a first outlet 761, which is an axial outlet, and a radial opening/closing unit 770b configured to open and close a second outlet 762 and a third outlet 763, which is a radial outlet. The axial opening/closing unit 770a and the radial opening/closing unit 770b may be disposed perpendicular to each other and integrated. The opening/closing member 770 rotates about the axial direction of the housing 760.

The axial opening/closing unit 770a may have a first flow through hole 771 corresponding to the first outlet 761. The radial opening/closing unit 770b may have

second flow holes

772a and 772b and

third flow holes

773a and 773b corresponding to the second and

third outlets

762 and 763, respectively.

Accordingly, when the opening/closing member 770 is rotated and stops at a position where the flow hole and the outlet face each other, the corresponding outlet is opened.

As described above, the example embodiment describes the structure in which the outlet is formed in the radial direction of the housing, and the example embodiment describes the structure in which the outlet is formed in the axial direction of the housing. In contrast, the example embodiments shown in fig. 50 to 52 disclose a structure in which the outlet is formed in the radial direction of the housing and in the axial direction thereof.

Since the outlets may be formed in both the radial and axial direction of the housing, a larger number of outlets may be provided or placed than in embodiments in which the outlets are provided only in the axial direction or only in the radial direction of the housing. Therefore, even if a greater number of spray nozzles are provided or placed, the washing water can be dispensed, and a greater number of dispensing combinations can be made.

As an example, as shown in fig. 53, the dispensing device 800 may have a housing 810 and an opening/closing member 820 rotatably disposed or placed within the housing 810, and the housing 810 may have a first outlet 811, a second outlet 812, and a third outlet 813 formed in an axial direction and a fourth outlet 814, a fifth outlet 815, and a sixth outlet 816 formed in a radial direction.

As shown, the first to

third outlets

811, 812 and 813 as axial outlets may be arranged in the radial direction, and the fourth to

sixth outlets

814, 815 and 816 as radial outlets may be arranged in the axial direction. Thus, the

outlets

811, 812, 813, 814, 815, and 816 can be opened and closed independently of each other. Thus, various combinations of allocations may be made. As shown in fig. 53, the

outlets

814, 815, and 816 may be arranged vertically with respect to each other such that they are vertically aligned in the axial direction. However, the present disclosure is not so limited, and the

outlets

814, 815, and 816 may be arranged perpendicularly with respect to each other such that they are not vertically aligned in the axial direction but are disposed at different positions of the circumferential surface in the circumferential direction of the housing 810 and/or the opening/closing member 820. Likewise, the

outlets

811, 812 and 813 may be arranged horizontally with respect to each other such that they are horizontally aligned in the radial direction. However, the present disclosure is not so limited, and the

outlets

811, 812, and 813 may be horizontally arranged with respect to each other such that they are not horizontally aligned in a radial direction but are disposed at different positions of the top surface in the radial direction of the housing 810 and/or the opening/closing member 820.

The

outlets

811, 812, 813, 814, 815 and 816 may be connected to

hoses

841, 842, 843, 844, 845 and 846, respectively, and supply the washing water to separate spray nozzles (not shown). The dispensing device 800 may dispense the washing water to a greater number of spray nozzles. Depending on the number of outlets and/or desired number of dispensing patterns and combinations, flow holes (not shown) may be provided or placed on the top surface and/or circumferential surface of the housing 810 and/or the opening/closing member 820 as appropriate.

Reference numeral 831 denotes a rotation shaft of a motor (not shown), 819 denotes an inlet, and 849 denotes an input hose. The motor of the dispensing device 800 may be arranged or positioned in a manner similar to the example embodiments disclosed herein.

Fig. 54 is a conceptual diagram of a dispensing device according to an embodiment of the present disclosure. Fig. 55 is a conceptual diagram of a dispensing device according to an embodiment of the present disclosure.

The dispensing device will be described with reference to fig. 54 and 55. The same reference numerals are used to denote the same elements, and the description of the elements or features that have been described previously may be omitted.

The dispensing device 850 may include a dispensing body 860, an inflow passage 879,

outflow passages

871, 872, 873, and 874, and dispensing

valves

891, 892, 893, and 894 disposed or placed at the

outflow passages

871, 872, 873, and 874, respectively, to open and close the

outflow passages

871, 872, 873, and 874.

Here, each of the

distribution valves

891, 892, 893, and 894 may be a general opening/closing valve having an independent driving source and operating independently. As an example, each of the

distribution valves

891, 892, 893, and 894 may be a solenoid valve, a ball valve, or a butterfly valve that utilizes electromagnetic force of a coil.

The dispensing device 850 can easily make various dispensing combinations by using independent opening/closing operations of the dispensing

valves

891, 892, 893, and 894.

In addition, the dispensing means may be configured or arranged by combining a dispensing means having a rotatable opening/closing member with a dispensing valve operated independently.

As shown in fig. 55, the dispensing device 900 may include: a housing 910 having a plurality of

outlets

911, 912, 913, and 914; an opening/closing member 920 rotatably disposed or placed in the housing 910 to open and close the

outlets

911, 912, 913, and 914; an inflow channel 939;

outflow channels

931, 932, 933, and 934 connected to the

outlets

911, 912, 913, and 914; and dispensing

valves

941 and 944 provided or placed on the

outflow passages

931 and 934 to open and close the

outflow passages

931 and 934.

The opening/closing member 920 may have

flow holes

921, 922, 923, and 924 rotated about an axial direction of the housing 910 and corresponding to the

outlets

911, 912, 913, and 914.

According to aspects of the present disclosure, the outlet may be formed in a radial direction of the housing 910, but the present disclosure is not limited thereto, and the outlet may be formed in an axial direction of the housing 910.

According to aspects of the present disclosure, the dispensing

valves

941 and 944 may be disposed or placed only on the

outflow channels

931 and 934. However, the dispensing valve may naturally be arranged or placed in the other outflow channel. For example, only one channel or more than two channels may include a dispensing valve, with the example embodiment of fig. 55 being only one example. Each of the

distribution valves

941 and 944 may be a general opening/closing valve having an independent driving source and operated independently.

Referring to fig. 56, the dishwasher may have a washing water distribution system capable of controlling a greater number of spray nozzles. As an example, the distribution system 950 may include: a pump 51 configured to pump washing water; a plurality of spray nozzles 960; a distribution flow path 970 having a plurality of branch points and configured to connect the pump 51 with the plurality of spray nozzles 960 to supply the washing water to the plurality of spray nozzles 960; and a plurality of dispensing means 980 provided or placed in the plurality of branch points to dispense the washing water.

When a dishwasher has a large number of spray nozzles, which cannot be covered or supported by a single dispensing device among the dispensing devices according to the previous embodiments, or the dishwasher may require a combination of various dispensing modes or states, the dishwasher may employ the dispensing system described above.

The distribution system does not have a distribution flow channel with only one branch point and only one distribution means, but may have a distribution flow channel with a plurality of branch points and a plurality of distribution means.

In such a case, the dispensing device of the dispensing system may comprise one or more of the various dispensing devices as disclosed herein.

For example, the distribution means may be any one or more of a distribution means having a rotatable opening/closing member in which the outlet is formed in the radial direction, a distribution means having a rotatable opening/closing member in which the outlet is formed in the axial direction, a distribution means having a rotatable opening/closing member in which the outlet is formed in both the radial direction and the axial direction, a distribution means having opening/closing valves that have independent drive sources and operate independently, and/or a distribution means in which a rotatable opening/closing member is combined with an opening/closing valve.

As apparent from the above description, the dishwasher having the linear spray structure according to the present disclosure may effectively circulate the washing water and increase space availability.

Further, only a partial region of the washing tub may be divisionally washed by supplying washing water only to some of the plurality of fixed nozzles.

Further, the washing water may be supplied to many spray nozzles, and various combinations of dispensing may be achieved and obtained.

The dishwasher and its operation according to the above-described example embodiments may use one or more processors. For example, a processing device may be implemented using one or more general-purpose or special-purpose computers, and may include, for example, one or more of a processor, controller, and arithmetic-logic unit, Central Processing Unit (CPU), Graphics Processing Unit (GPU), Digital Signal Processor (DSP), image processor, microcomputer, field programmable array, programmable logic unit, Application Specific Integrated Circuit (ASIC), microprocessor, or any other device capable of responding to and executing instructions in a prescribed manner.

Although exemplary embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

Claims

1. A dishwasher, comprising:

a main body;

a plurality of spray nozzles configured to spray washing water; and

a dispensing device dispensing the washing water into the plurality of spray nozzles,

wherein the dispensing device comprises:

a cylindrical housing having an inlet formed in one axial end thereof and a plurality of outlets arranged in a circumferential surface of the cylindrical housing in an axial direction and connected to the plurality of spray nozzles;

an opening/closing member rotatably provided within the cylindrical housing to open and close the plurality of outlets; and

a motor to rotate the opening/closing member,

wherein the opening/closing member includes a rotating body having a cylindrical shape and a plurality of sealing members combined with the rotating body to close the plurality of outlets,

an outer circumferential surface of the rotating body is spaced apart from an inner circumferential surface of the housing by a predetermined distance, the rotating body including a spacing protrusion protruding in a radial direction to maintain a distance between the outer circumferential surface of the rotating body and the inner circumferential surface of the housing,

the sealing member is combined with the rotating body to be movable in a radial direction of the rotating body to open or close the plurality of outlets.

2. The dishwasher of claim 1, wherein the plurality of outlets are independently opened and closed according to rotation of the opening/closing member.

3. The dishwasher of claim 1, wherein the sealing member moves between an open position in which the sealing member abuts the rotatable body and a closed position in which the sealing member abuts the outlet.

4. The dishwasher of claim 3, wherein the sealing member moves from the open position to the closed position due to the pressure of the wash water.

5. The dishwasher of claim 1, wherein the sealing member comprises a sealing unit having a curved shape and a coupling protrusion protruding from the sealing unit to be combined with the rotating body.

6. The dishwasher of claim 5, wherein the rotating body comprises a fastening hole, wherein the coupling protrusion is inserted into the fastening hole.

7. The dishwasher of claim 5, wherein the coupling protrusion comprises a brake unit protruding to prevent the sealing member from being separated from the rotating body.

8. The dishwasher of claim 1, wherein the rotating body comprises a plurality of flow holes formed in a circumferential surface of the rotating body to correspond to the plurality of outlets.

9. The dishwasher of claim 1, wherein the dispensing means further comprises a cam member combined with the opening/closing member and the motor to rotate together with the opening/closing member, and a micro switch contacted by the cam member to detect a rotational position of the opening/closing member, wherein the cam member comprises a convex unit and a concave unit alternately formed in a circumferential direction such that the micro switch is opened and closed according to the rotation of the cam member.

10. The dishwasher of claim 9, wherein the dispensing device further comprises a controller that designates a position of the opening/closing member according to a point of time at which the micro switch is turned on and off, and rotates the motor or stops rotation of the motor such that the opening/closing member is rotated to a desired rotational position among the rotational positions.

11. The dishwasher of claim 1, wherein a tub is disposed within the body, the plurality of spray nozzles including at least one stationary nozzle fixed at one side of the tub and at least one rotating nozzle configured to rotate due to water pressure, wherein the at least one stationary nozzle is disposed adjacent to a rear wall of the tub, the inlet is disposed to face one side wall of the body, and the plurality of outlets are disposed to face the rear wall of the body.